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13 November, 12:15

What number should be added to the expression x^2 + 6x to change it into a perfect square trinomal

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  1. 13 November, 13:40
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    Hello.

    The correct is answer is 9.

    You have to do half of 6 (3) and then square it that equals 9

    So it should be x^2 + 6x + 9

    Have a nice day
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